Mechanical movement.



C. A. MILNE.

MECHANICAL MOVEMENT.

APPLICATION FILED NOV. 6, 1913..

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MECHANICAL MOVEMENT.

APPLIGATION FILED NOV. 6, 1913v LIZ'LOfiS,

Patented Feb. 2, 1915.

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My M m M mm n m V M MW fl 3 0 as ea cEAnLEs A. 'MILNE, or DETROIT, 'MicIemu, assrsnon T0 TRUMAN PABSHALL, or

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mec anical; Moymunun Memes.

To-aZZ whom it maycaacem; i

Be it known that I, CHARLns A. MILNE, a citizen of the United States,residing at Detroit, in the county of lNayne,'.State of Michigan,

Movements; and

skilled in the art towhich it appertains to make and use the same,reference being had to the accompaniyng drawings, and to the charactersof reference marked thereon, which form a part of this-specification.

This invention relates to a mechanical movement and consists in theconstruction and arrangement of parts hereinafter more fully set forthand pointed out particularly in the claim.

v The object of the invention is to provide simple and efficient meansfor converting and transmitting rotary into-reciprocating motion. themechanism being "especially adaptcdfor use in connection withreciprocating pumps or air compressors, the driving mechanism isrequired to be confined within a small and compact area, and in which itis desirable to actuate a multiple of reciprocal plungers from acommoncenter through the rotary movement of, a Idriving shaft, in suchmanneras. to afford di rect contact between the driving parts so as tominimize the number of moving parts, to reduce friction and to attain ahigh eficiency ofthepower applied.

The above ob ect, sattained by the em-' ployment of the construction andthe ar- 1 rangement of parts as illustrated in the accompanying drawingsm wehichz- Figurel is a central longitudinal section through themechanism as applied to an or- I dinary multiple cylinder air compressorthe shafts and piston rods being shown in taken on dotted'line 2-2 ofFig-1. Fig. 3

disk for transmitting 'movement to the elevation. Fig. 2 is a transversesectional view through the partsand containing case is an elevation ofthe detached oscillatory pistons. I i 0 v Referring to the drawings bythe-charae ters of reference marked thereon l and 2' designate the partsof the containing case or cylinder members, each of which is listedApplication. filed. Novenilger 6,, 11951.31 S eri-a1 We. 199,436.

have invented certain new and useful Improvements in Mechanical I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others wherein Specification of Li-atesmm; d Patented Fehfi, 1935 te form a plurality of diametrically opposedcylinders 3 therein, said members at A I 0 v their inner ends beingprovided with flanges a through which bolts 5, withnuts 6, are

passed-t0 couple said parts together, thecylinder members being sojoined as to dispose the cylinders therein in axial alinement with eachother.

heads 8 secured thereto by bolts 9 through the flanges thereof. Theconcaved head at.

I The outer ends of the cylinder members 1 and 2 are closed by integralI V heads 7 which are surmounted by concaved concaved head of thecylinder member 1 is locked in contact with the end'of a stem 12projecting. from the head of said cylinder 1 by means of a bolt 13threaded therein and carrving a jam nut 14: in engagement with saidhead. The space between said cvlinder heads and concaved heads formscompression' chambers which communicate with the cylindersthroughtheports 15.

The construction and arrangement of the 7 cylinder members as describedis common m air compressors and is not essential to the operation of themechanism shown herein for transmitting and imparting a reciprocalmotion to one member through therotarv movement of another, asthismechanism is adaptable -for various other uses, but is shown inconnection with an air compressor to better illustrate its operation.

Journaled concentrically within the con tral portion of the cylindermember 2 to rotate in the. bearing 16 formed therein. is a drive shaft17, and mounted upon the end of I said shaft, and lying concentricallywithin and betweenv the cylinder members 1 and 2,

is an enlarged circular head 18 having an o liiiue face which extendsacross the plane of the axis of the shaft at an angle thereto, forming acam face 19,'and projecting at rightangle from said cam face concentrictherewith is a hub 20, and lying concentric with and freely receivingsaid hub, is'an annular washer or ring 21 'carrvinga multiple of steelballs 22 extending transversely through the body at intervals throughthe circumference thereof, in the form of a ball thrust bearing.

Mounted m: each of the cylinders. 3'is a cally of said piston rods andin opposed reother are cylindrical apertures 26. l

piston 23, and connected rigidly to each op posed pair of pistons is apiston frod 24.11am ing an enlarged body portion or head 25 formedthereon midway the length thereof.

Extending centrally in said headsdia'metrilation to each v Mounted in abearing 27 formed centrally in the cylinder member 1, and extendingtherein in axial alinement with the rotatable shaft 17, is a stub shaft28, the inner end of which is reduced and terminates in the form r 'of a'ball 29. The opposite end ofsaid stub through the rotation of'said.bolt, said shaft may beadjusted longitudinally of its bear shaft abutsagainst the inner end of the bolt 13 threaded into the stem 12 at theopposite end of the shaft bearing 27, whereby,

ing, said bolt being locked a gainst' rotation by the jam nut l4thereon.'.

As a means for impartinga reciprocating movement to the piston rods andtheir pistons through the rotary motion of, the shaft" 17,an'oscillatory disk 30 His interposed between the thrust ball' bearing,ring of the cam face19 and the ball 29 ofthe'stub shaft 28. Saidoscillatory disk is provided upon ,one side with a centralc'onca-vity 31which forms a socket for the reception 'oftheball' 29 of the shaft 28,whereby a central piv-,

- otal contact is formed between said disk and shaft. The oppositefaceof said disk is provided with a flat surface for engagement-{ with theballs forming la thrust bearing with the face 'of the cam. The peripheryofthe oscillatory disk is provided withintegral extensionscarrying'balls '32 upon diametrically opposite sides thereof -(see Fiig.3 the diameter" of said balls being su I ciently less than the diameterof the cylindrical apertures 26 ofthe piston rods 24 to enable saidballs to lie freely withinf said apertures in coiitactwith and in amanner' to permit of a slight rotary as well as sliding contact withthelwalls thereof, as clearly shown in Figs. '1 aid '2.

- ."By this arrangement, theflat face of theoscillatorydisk being heldin contactwith the cam face of the rotary shaft through the-[centralpivotal con-tact of its opposlte .face with the ball of the stub shaft,saiddisk will be caused atyall timestolie in ayline with theplane of thecam face of the rotary to said disk as the position of the cam face andthrough/the pivotal contactof the-pis changes or reverses with respectto a. rightangle: plane with the axis about whichit ro-' tates, thusactuating said disk in sequential progression throughout itscircumference,

ton rods with the iball extensions on said it disk, said piston rodswill be alternately reciprocated in theiropposed cylinders, as a shaft,and as said shaft-is rotated a rocking or oscillating movement will beimparted indicated by dotted lines or other substance compressed by themovein Fig. 1, the air ment of the pistons passing through the -.chargedinto the compression chambers.

through the interposed bearing ring will be caused to travel in adirection diametrically across saidcam face,while at the-same time portsin the heads of the cylindersis disf "-It will be observed that as thedisk rocks or oscillates upon its pivotal center,.t he face of the diskin contact with the cam face said cam face is rotating about the centeror ax s of Sald;dlSk, thus producing a surface movement'in'twodirections between the meeting parts, and the pressure exerted upon theopposed. faces of the cam and disk being carried by the. rolling contactof the interposed steel balls permits this double movement with :butslight frictional resistance or wear pon the bearing surface, while theendthrust exerted upon the cam shaft is carried by a ballthrust bearinring 33 in terposed between the forwar end of the shaft bearing 10.andthe shoulder of the head 18 of the'cam. It will thus be seen that a ballcontact bearing is formed between all of the moving parts of themechanism sub- ,jected to direct strain and wear, thatsuch 4 movingparts arecomparative y few in number and simple in their construction,and.

that the application ofpower to the rotary shaft will be directlytransmittedto impart an alternating or reciprocating movement 0' or.more reciprocal members.

causing a continuous oscillation of the pivotal disk n. sequentialprogress on c rcum-l ment 'of the parts being so disposed as to enablean adjustment to compensate for wear, in practically all of the contactor rior of the case by means of: the adjusting bolt as beforedescribed,thus renderingaccessibility' to the interior ofthe case unnecessa'ry"for the purposeof keeping the parts in close working order.

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ecause of the action of-the cam face in Wearing points, to be effectedthrough the adjustment ofthe stub shaft from the exte I l Having thusfully set forth my invention,-

what I claim as new, and desire to secure by Letters'Patent, is v v Amechanical movement comprising aretaining-case, a revoluble. shaftjournaled in said case, reciprocal rods mounted in said case, each rod'having an aperture formed diametrically therein, a pivotal shaftferentially thereof, a large numbertof pis-' I tons may bearranged-about said disk and mounted in said case in axial alinementwith said revoluble shaft and adapted for adjustment longitudinally, ahead on said 'revoluble shaft having a face cam thereon,

an oscillatory disk pivoted centrally upon said pivot shaft and havingperipheral extensions upon opposite sides thereof engagof saidoscillatory disk and the face of the cam of said revoluble shaft.

In testimony whereof, I sign this specification in the presence oftwo'witnesses.

CHARLES A. M'ILNE. .Witnesses:

B. F. WHEELER,- M. E. BROESAMILE.

